using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace HuizhongLibrary.MyAlphaControl
{
    public partial class AlphaLabel : UserControl
    {
        private Bitmap m_BackgroundImage;
        /// <summary>
        /// 背景图片
        /// </summary>
        public new Bitmap BackgroundImage
        {
            get { return m_BackgroundImage; }
            set 
            { 
                m_BackgroundImage = value;
            }
        }
        private StringPool m_ScrollText = new StringPool();
        /// <summary>
        /// 滚动文字列表
        /// </summary>
        public StringPool ScrollText
        {
            get { return m_ScrollText; }
            set { m_ScrollText = value; }
        }
        private int m_ScrollTop = 0;

        public int ScrollTop
        {
            get { return m_ScrollTop; }
            set { m_ScrollTop = value; }
        }
        private int m_ScrollLeft = 0;

        public int ScrollLeft
        {
            get { return m_ScrollLeft; }
            set { m_ScrollLeft = value; }
        }
        private string m_MoveDirection = "None";
        /// <summary>
        /// 移动方向(None,Left,Right,Top,Boottom)
        /// </summary>
        public string MoveDirection
        {
            get { return m_MoveDirection; }
            set { m_MoveDirection = value; }
        }
        private int m_DurationStep = 5;
        /// <summary>
        /// 每次移动多少个像素(默认一个像素，最慢的移动速度)
        /// </summary>
        public int DurationStep
        {
            get { return m_DurationStep; }
            set { m_DurationStep = value; }
        }
        private StringFormat m_TextAlign = new StringFormat();
        /// <summary>
        /// 文本对齐
        /// </summary>
        public StringFormat TextAlign
        {
            get { return m_TextAlign; }
            set { m_TextAlign = value; }
        }


        private int m_Interval = 1;

        public int Interval
        {
            get { return m_Interval; }
            set { m_Interval = value; }
        }
       
        private int m_TimeOut = 30;

        public int TimeOut
        {
            get { return m_TimeOut; }
            set { m_TimeOut = value; }
        }
        private bool m_TickEnable = false;
        /// <summary>
        /// 是否启用倒计时
        /// </summary>
        public bool TickEnable
        {
            get { return m_TickEnable; }
            set
            { 
                m_TickEnable = value;
                if (value == true) { StartTimeer(); }
                else { StopTimeer(); }
            }
        }

        private Color m_BorderColor = Color.Black;
        /// <summary>
        /// 边框粗细
        /// </summary>
        public Color BorderColor
        {
            get { return m_BorderColor; }
            set { m_BorderColor = value; }
        }

        private bool m_Visible = true;

        public new bool Visible
        {
            get { return m_Visible; }
            set
            {
                m_Visible = value;
                base.Visible = value;
            }
        }
        private string m_NullText = "";
        /// <summary>
        /// 空时显示的文本
        /// </summary>
        public string NullText
        {
            get { return m_NullText; }
            set { m_NullText = value; }
        }
        public bool ShowDateTime = false; //是否显示时间
        public string DateTimeFormat = "yyyy年M月d日HH:mm:ss";
        public int MaxRowNumber = 1;

        /// <summary>
        /// 当倒计时正常终止时触发
        /// </summary>
        public event Action<AlphaLabel> TimeTick;

        private int ScrollTextWidth = 0;
        private int SRCCOPY = 13369376;
        private Graphics G1;
        private Graphics G2;
        private IntPtr hdc1;
        private IntPtr hdc2;
       
       
        public AlphaLabel()
        {
            TextAlign.LineAlignment = StringAlignment.Near;
            TextAlign.Alignment = StringAlignment.Near;
            InitializeComponent();
            
        }

        #region 画背景图片(用于假透明显示)
        public void SetBackground(Bitmap bmp)
        {
            if (bmp == null) return;
            BackgroundImage = new Bitmap(this.Bounds.Width, this.Bounds.Height);
            Graphics G2 = Graphics.FromImage(BackgroundImage);
            G2.DrawImage(bmp, new Rectangle(0, 0, this.Bounds.Width, this.Bounds.Height), new Rectangle(this.Left, this.Top, this.Bounds.Width, this.Bounds.Height), GraphicsUnit.Pixel);
            G2.Dispose();
            //this.BorderStyle = BorderStyle.None;
            //this.BackColor=Color.Transparent;
        }
        #endregion
        #region 重画文字
        //private byte[] CacheImage = null;
        public void DrawString(int x, int y, string s)
        {
            Bitmap bmp = null;
            if (BackgroundImage == null)
            {
                bmp = new Bitmap(this.Bounds.Width, this.Bounds.Height);
            }
            else
            {
                //复制图片
                //CacheImage = CustomIO.GetPhoto(this.BackgroundImage);
                bmp = (Bitmap)BackgroundImage.Clone();
            }
            G1 = this.CreateGraphics();
            G2 = Graphics.FromImage(bmp);

            hdc1 = G1.GetHdc();
            hdc2 = G2.GetHdc();


            if (BackgroundImage == null) G2.Clear(this.BackColor);
            Brush backBrush = new SolidBrush(this.ForeColor);
            G2.DrawString(s, this.Font, backBrush, x, y);
            backBrush.Dispose();
            SystemInfo.BitBlt(hdc1, 0, 0, Width, Height, hdc2, 0, 0, SRCCOPY);

            G1.ReleaseHdc(hdc1);
            G2.ReleaseHdc(hdc2);

            G1.Dispose();
            G2.Dispose();
            bmp.Dispose();

            //if (pictureBox1.Image != null) pictureBox1.Image.Dispose();
            //pictureBox1.Image = bmp;
            //GC.Collect();
        }
        #endregion
        #region 移动文字
        public void MoveText()
        {
            if (this.MoveDirection == "Left")
            {
                if (this.ScrollLeft <= -this.ScrollTextWidth) { this.ScrollLeft = this.Width; AddScrollTextIndex(); }
                this.ScrollLeft -= this.DurationStep;

            }
            if (this.MoveDirection == "Right")
            {
                if (this.ScrollLeft >= this.Width) { this.ScrollLeft = -this.ScrollTextWidth; AddScrollTextIndex(); }
                this.ScrollLeft += this.DurationStep;

            }
            if (this.MoveDirection == "Top")
            {
                if (this.ScrollTop <= 0) { this.ScrollTop = this.Height; AddScrollTextIndex(); }
                this.ScrollTop -= this.DurationStep;

            }
            if (this.MoveDirection == "Bottom")
            {
                if (this.ScrollTop >= this.Height) { this.ScrollTop = 0; AddScrollTextIndex(); }
                this.ScrollTop += this.DurationStep;
            }
            this.DrawString(this.ScrollLeft, this.ScrollTop, this.Text);
           
        }
        #endregion
        #region 增加索引
        void AddScrollTextIndex()
        {
            if (string.IsNullOrEmpty(this.Text) == false) ScrollText.CheckIn(this.Text);
            if (ScrollText.Available == 0) this.Text = this.NullText;
            this.Text = ScrollText.CheckOut();
            InitScrollTextSize();
            //ScrollTextIndex++; 
            //if (ScrollTextIndex >= this.ScrollText.Count)
            //{
            //    ScrollTextIndex = 0;
            //}
        }
        #endregion
        #region 计算文字大小
        private SizeF MeasureString(string Text, Font font)
        {
            Bitmap bmp = new Bitmap(1, 1, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
            Graphics g = Graphics.FromImage(bmp);
            SizeF s = g.MeasureString(Text, font);
            return s;
        }
        #endregion
        #region 开始计时
        Timer time1 = new Timer();
        private int TimeNumber=0;
        public void StartTimeer()
        {
            TimeNumber = this.TimeOut;
            time1.Interval = this.Interval * 1000;
            time1.Tick += time1_Tick;
            time1.Enabled = true;
        }

        void time1_Tick(object sender, EventArgs e)
        {
            if (ShowDateTime == true)
            {

                this.Text = DateTime.Now.ToString(DateTimeFormat);
            }
            else
            {
                if (this.TimeNumber == 0)
                {
                    StopTimeer();
                    TimeNumber = this.TimeOut;
                    if (this.TimeTick != null) this.TimeTick(this);
                    return;
                }
                this.Text = TimeNumber.ToString();
                TimeNumber--;
            }
            this.Refresh();
        }
        #endregion
        #region 停止计时
        public void StopTimeer()
        {
            time1.Tick -= time1_Tick;
            time1.Enabled = false;
        }
        #endregion

        #region 刷新
        public new void Refresh()
        {
            Bitmap bmp = null;
            if (BackgroundImage == null)
            {
                bmp = new Bitmap(this.Bounds.Width, this.Bounds.Height);
            }
            else
            {
                bmp = (Bitmap)BackgroundImage.Clone();
            }
            //G1 = this.CreateGraphics();
            G2 = Graphics.FromImage(bmp);

            //hdc1 = G1.GetHdc();
            //hdc2 = G2.GetHdc();

            if (BackgroundImage == null) G2.Clear(this.BackColor);
            Brush backBrush = new SolidBrush(this.ForeColor);
            //if (this.Border > 0) g.DrawRectangle(new Pen(BorderColor, this.Border), this.Bounds);
            //if (string.IsNullOrEmpty(this.Text) == false) g.DrawString(this.Text, this.Font, backBrush, new RectangleF(0, 0, this.Bounds.Width, this.Bounds.Height), TextAlign);
            if (string.IsNullOrEmpty(this.Text) == false)
            {
                G2.DrawString(this.Text, this.Font, backBrush, new RectangleF(0, 0, this.Width, this.Height), this.TextAlign);
                //if (TextAlign.Alignment == StringAlignment.Near)
                //{
                //    G2.DrawString(this.Text, this.Font, backBrush, 0, 0);
                //}
                //if (TextAlign.Alignment == StringAlignment.Center)
                //{
                //    float TextWidth = MeasureString(this.Text, this.Font).Width;
                //    float x = (this.Width - TextWidth) / 2;
                //    G2.DrawString(this.Text, this.Font, backBrush, x, 0);
                //}
                //if (TextAlign.Alignment == StringAlignment.Far)
                //{
                //    float TextWidth = MeasureString(this.Text + "AA", this.Font).Width;
                //    float x = (this.Width - TextWidth);
                //    G2.DrawString(this.Text, this.Font, backBrush, x, 0);
                //}
            }
            backBrush.Dispose();
            //SystemInfo.BitBlt(hdc1, 0, 0, Width, Height, hdc2, 0, 0, SRCCOPY);

            //G1.ReleaseHdc(hdc1);
            //G2.ReleaseHdc(hdc2);

            //G1.Dispose();
            //G2.Dispose();
            //bmp.Dispose();
            if (pictureBox1.Image != null) pictureBox1.Image.Dispose();
            pictureBox1.Image = bmp;
        }
        #endregion
        #region 新增文本行
        public void AddRowText(string Text)
        {
            if (this.ScrollText.Available == this.MaxRowNumber)
            {
                this.ScrollText.CheckOut();
            }
            this.ScrollText.CheckIn(Text);
            string ss = "";
            for (int i = 0; i < this.ScrollText.Available; i++)
            {
               ss+=this.ScrollText.Peek()+ "\n";
            }
            ss = ss.Substring(0, ss.Length - 1);
            this.Text = ss;
        }
        #endregion
        #region 清除文本
        public void ClearRowText()
        {
            this.ScrollText.Clear();
            this.Text = "";
        }
        #endregion
        #region 移除滚动文字
        public void Remove(string item)
        {
            this.ScrollText.Remove(item);
            if (this.Text == item) this.Text = "";
            if (ScrollText.Available == 0)
            {
                this.Text = this.NullText;
            }
            else
            {
                this.Text = this.ScrollText.CheckOut();
            }
            if (this.MoveDirection == "Left")
            {
                this.ScrollLeft = this.Width; 
            }
            if (this.MoveDirection == "Right")
            {
                this.ScrollLeft = 0; 
            }
            if (this.MoveDirection == "Top")
            {
                this.ScrollTop = this.Height; 
            }
            if (this.MoveDirection == "Bottom")
            {
                this.ScrollTop = 0; 
            }
            InitScrollTextSize();
        }
        #endregion

        #region 初始化文字大小
        public void InitScrollTextSize()
        {
            this.ScrollTextWidth =Convert.ToInt32(MeasureString(this.Text, this.Font).Width);
        }
        #endregion

        #region 隐藏背景控件
        public void VisiblePictureBox()
        {
            pictureBox1.Visible = false;
        }
        #endregion


        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
        }
    }
}